Entry Description: The guard railsused in our daily lifeare connected one by one, which requires a great amount of them if put in that way, which not only inconvenient for us to carry but also uneasy for transportation. The amount of rails we can load in a track is limited, so we need many trucks and many times conveyance.The designed products are more convenient for transportation and reduce at least 50% transportation burden. Because the one designed rail can equal to two existing rails.The designed rails can be well combined together to form them as a whole to strengthen the stability. We can also set protective barriers around the rails to warn people.